Machine for unwinding remnants of yarn from bobbins



NOV. 17, BALKEN 2,659,126 y MACHINE FOR UNWINDING REMNAm's oFYAN FROM BoBBINs Filed Aug. 24, 1951 INVENTOR ATTORNEY Patented Nov. 17, 1953 UNITED STATES PATENT `OFFICE MACHINE FOR UNWINDING REMNANTS oF YARN FRoM BoBBiNs Y Heinz Balken, Wipperfnrih (Rheinland),

Leiersmuhle, Germany Application August 24, 195i, serial No. 243,456 Y 'Claims priority, application Germany September 9v, 1950 v Claims. (Cl. .Z8-19) cumference with successive longitudinal ledges 5.

rollers; the rollers are stopped as soon as the yarn is wound onto them and the yarn is removed. This stoppage involves great drawbacks with regard to the efficiency of the yarn removing de- Vices.

It is an object of the present invention to provide a continuously operable device for the unwinding of the yarn remnants from the bobbins.

With this object in view a guide roller is provided for the detachment of the yarn from the yarn unwinding roller. This guide roller is provided with circumferential ledges or similar means to cause by its rotation an air current detachment of the yarn from the unwinding roller, the yarn being transported to a collector.

This arrangement enables a continuous operation of the machine which needs not to be stopped for the unwinding of the yarn remnants from the unwinding roller, the latter being effected by the guide roller.

A conveyor device operable at a slow speed, such as a chain provided with pins, may be provided next to the unwinding roller for the support of the bobbins. All the operator has to do is to put the ends of the yarn remnants onto the unwinding roller which frees the bobbins from the yarn remnants.

Further objects and advantages of the present invention will be apparent from the following description reference being made to the accompanying drawing showing a preferred embodiment thereof.

In the drawing,

Figure 1 is a side view subject matter of the invention, the motor, `the bobbin stripping plate and the bobbin receiver ein omitted;

b Figure 2 is a front view of the machine shown i ure 1. n f

1nIligthe upper section of the device, forming the subject matter of this invention, arroller 3 to unwind the yarn remnants and provided in the customary manner with an adhesive covering is mounted on two lateral supports I and `2. In the rear of said unwinding roller 3 a transport or guide roller ll is located between said lateral supports I and 2 in parallel relationship to said unwinding roller 3. This guide roller is provided on its cirof a device forming the Both rollers 3 and Il are driven through the intermediary of a shaft I by an electric motor 6, so as to rotate them in the same direction. Shaft l is coupled with the shaft of the unwinding roller 3 by means of belt 8 and to the shaft of the guide roller 4 by means of belt 9.

Motorshaft l drives through worm I0 and worm Wheel II an intermediate shaft I2 which through a belt I3 drives a chain wheel Ill. An endless conveyor chain 2Il provided with equally spaced pins I6 runs over said chain wheel I4 and a reversing wheel I5 disposed at the other end of the device.

For the operation of the device the bobbins I'I to be freed from the yarn remnants are located on the pins IS as soon as they have passed the reversing wheel I5.

The operator applies the yarn end I8 of each bobbin Il'to the unwinding roller 3 which, due to its adhesive covering, unwinds the yarn. Through the air current produced by the longitudinal ledges 5 of the rotating guide roller the yarn ends I8 are detached from the unwinding roller 3 and conducted to a receiver collector I9 located in the rear of the machine. 4

The whole yarn is usually drawn from the bobbins Il after the bobbins have been conducted by a conveyor band 2i) over the chain wheel I4. By means of the stripping plate 2l the empty bobbins are stripped from the pins I6, so as to fall on the guide plate 22 and, finally, into the bobbin receiver 23. Y

If a bobbin carries a very large quantity of yarn remnants and it is not emptied after passing the upper section of the chain 20, the chain drive may be stopped. For this purpose the shaft I2 is divided and has a clutch 241. The lever 25 for engaging and disengaging the movable clutch half is operated by the rod 26 and the lever rod 2l by means of a'treadle 23.v When thistreadle is trodden clown the lever 25 turns the clutch clockwise and disengages it, so that the chain conveyor device is stopped. When releasing the treadle 28, it is kept in its lowermostV position by means of a locking lever 2Q which is kept under spring tension and stops the rear motion of the lever rod 27. The locking lever 29 is rigidly connected to a rod 30 mounted rotatably onbearing levers -32 pro- Y Y Y After treading down the vided with a treadle 3l.

treadle 28 the clutch 211, owingto the action of the locking lever 2S, remains disengageduntil l such time as a kick appliedV to the treadle `3l j y out of its locking swingsthe locking lever 29V position.V

What I claim is:

1. -A device for the removal of yarn remnants from Weaving bobbins comprising a support for the yarn carrying bobbins, a rst roller adj acently located Q0 s bisiv www# t0 unwind Said yarn remnani'fg'm Sad bvbins and @Second guide roller adjacently located to said rst roller to Withdraw said yarn remnants from said rst roller for the conduct of the same into a collector.

2. A device according to claim 1 and mea-ris attached to the circumference of said guide roller to produce an air currentl adapted tglift tire yarn remnants for said first yarn unwinding roller.;

3. A device according to claim 2 in which the support for the bobbins comprises radially extending longitudinal ledges appligd tg the cir,-v

cumference of said guide roller Y and said guide roller in the same direction of ro- 20 taticii.

4 5 In a device according to claim 4 in which the support for the bobbins comprises a conveyor band located beneath said first roller and pins attached to said conveyor band to carry said yarn carrying bobbins HEINZ BALKEN References Cited in the file Of this patent UNITED STATES PATENTS umber Name Date 1,631,920 Crossland June '7, 1927 1,990,740 Lonzo Feb 12, 1935 24179296.- Lcnzo May 4, 1937 VFOREIGN PATENTS Number Country Date 208,5;19 Switzerland May 1, 1940 233,826 Switzerland Nov 16, 1944 

